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How to build the open source part of the firmware

# Modas Firmware 2.11b uses kernel 4.9.53
# Modas Firmware 2.11p1 uses kernel 4.9.105
# Modas Firmware 2.12a uses kernel 4.9.140
# Modas Firmware 2.12f uses kernel 4.9.164 (see Linux_4.9.164.Readme.txt)
# Modas Firmware 2.12k uses kernel 4.9.193 (see Linux_4.9.193.Readme.txt)

Get Kubuntu: https://kubuntu.org/getkubuntu/

Version Kubuntu 18.04.1 LTS - 64Bit:
http://cdimage.ubuntu.com/kubuntu/releases/18.04/release/kubuntu-18.04.1-desktop-amd64.iso

Default installation

# sudo apt-get update
# sudo apt-get upgrade

Packages for virtualbox (In my example case)
# sudo apt-get install build-essential gcc make perl dkms
Installed virtualbox additions

# sudo apt-get install mc libncurses5-dev build-essential subversion libncurses5-dev zlib1g-dev gawk gcc-multilib flex git gettext mc libssl1.0-dev

Build OpenWRT:

# mkdir ~/Source
# mkdir ~/Source/OpenWRT
# wget http://download.modas.com/Source/OpenWRT.tar.bz2
# wget http://download.modas.com/Source/dl.zip
# wget http://download.modas.com/Source/AddPatches.zip
# tar jxf OpenWRT.tar.bz2 -C ~/Source/OpenWRT
# unzip dl.zip -d ~/Source/OpenWRT/dl
# unzip AddPatches.zip -d ~/Source/AddPatches
# cd ~/Source/OpenWRT
# git apply ~/Source/AddPatches/git-version-check-fix.patch
# cp ~/Source/AddPatches/tools_automake_patches_010-automake-port-to-Perl-5.22-and-later.patch ~/Source/OpenWRT/tools/automake/patches/
# cp ~/Source/AddPatches/0002-Add-compiler-gcc7.h-header-file.patch ~/Source/OpenWRT/tools/mkimage/patches/
# cp ~/Source/AddPatches/960-gcc-libc-name-p.patch ~/Source/OpenWRT/toolchain/gcc/patches/4.8-linaro/
# make

OpenWRT is build completely.

Build Linux-Kernel:
# sudo apt-get install gcc-arm-linux-gnueabi lzop u-boot-tools

# mkdir ~/Source/TargetFS
# mkdir ~/Source/Linux
# cd ~/Source/
# wget http://download.modas.com/Source/Linux_4.9.105.tar.bz2
# tar jxf Linux_4.9.105.tar.bz2 -C ~/Source/Linux
# cd ~/Source/Linux
# make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- O=./build INSTALL_MOD_PATH=~/Source/TargetFS mrproper
# cp config.Modas build/.config
# make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- O=./build INSTALL_MOD_PATH=~/Source/TargetFS
# make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- O=./build INSTALL_MOD_PATH=~/Source/TargetFS modules_install
# mkimage -A arm -O linux -T kernel -C none -a 10008000 -e 10008000 -d ~/Source/Linux/build/arch/arm/boot/zImage ~/Source/uImage

Module-Part for filesystem is in ~/Source/TargetFS and Kernel ready for the cpu is ~/Source/uImage

Build UBoot:
# mkdir ~/Source/UBoot
# cd ~/Source/
# wget http://download.modas.com/Source/UBoot.tar.bz2
# tar jxf UBoot.tar.bz2 -C ~/Source/UBoot
# cd ~/Source/UBoot
# cp ~/Source/AddPatches/compiler-gcc7.h ~/Source/UBoot/include/linux/
# make CROSS_COMPILE=arm-linux-gnueabi- -j4 mx6smodas_mc1_config 
# make CROSS_COMPILE=arm-linux-gnueabi- -j4

Build xt_modas.ko module:
# cd ~/Source/
# wget http://download.modas.com/Source/config-3.16
# wget http://download.modas.com/Source/xt_modas.tar.bz2
# wget https://cdn.kernel.org/pub/linux/kernel/v3.x/linux-3.16.61.tar.xz
# mkdir ~/Source/xt_modas/
# tar jxf xt_modas.tar.bz2 -C ~/Source/xt_modas/
# mkdir ~/Source/Linux-3.16
# tar xf linux-3.16.61.tar.xz -C ~/Source/Linux-3.16
# cp config-3.16 ~/Source/Linux-3.16/linux-3.16.61/.config
# cd ~/Source/Linux-3.16/linux-3.16.61
# make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- oldconfig
# make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- 
# cd ~/Source/xt_modas/
# make ARCH=arm CROSS_COMPILE=arm-linux-gnueabi- 
# arm-linux-gnueabi-strip --strip-debug xt_modas.ko

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